Electromagnetic fields effects on biological cells and static materials such as Titanium, carbon fiber, and glass.

How is class transparent

why does water refract light at a given angle?

How do magnets work, theoretically can they every wear out?

How does sound insulation work and how can I make it better?

How much light (electromagnetic radiation) can we not see?

Common molecule length calculations

What would happen if you popped a balloon in space?

How much force is required to break a wooden baseball bat when hitting a baseball at a given speed?

What common aeronautical toys could escape the moons gravitation field starting on the surface?

How fine is the powder on the surface of the moon, relate it to materials on Earth?

How much energy is my 3D printer using and how much does that energy cost?

How to make a rocket engine powered by the hydrolysis of water as a fuel. 

How to produce hydrogen gas at home?

Why do syphons work in a vacuum and how does the surface friction effect the speed of fluid transport?

How to understand and calculate and predict the thermal expansion and contraction of common materials.

How do metal detectors work?

How durrible are solar sails

What is the maximum theoretical efficiency of solar panels, how efficient are plants at converting light energy into mechanical energy?